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Originally Posted by sanders
Some very interesting options here.
How do e-readers handle password-protected PDFs? Can you enter a password on an Iliad for example? Will users consider this an "acceptable" hindrance?
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I confess, I don't know how Iliads handle PDFs and password protection. (By the way, don't call an Iliad an "e-reader," or you'll incur the wrath of Jon!
Call it an e-book reader.) PDF files can be created with a password to open (or edit) the file. For small enough distribution, you could create individual files with unique passwords for each.
Quote:
Originally Posted by tompe
We used a book in a logic course that had a key that was used to correct exercises via the net. The book was freely available as pdf but to pass the course you had to have a unique key and two persons could not use the key at the same time. That is one way to get people to buy a new book.
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An excellent way to go about it!